Heather Butler is a great dermatologist. She finds things other doctors and dermatologists don't find. She's been in the business for many years and she's really amazing. I have a history of skin cancer in my family and she's found everything that looks pre-cancerous. She's very gentle, and she explains everything very well. Every time I've gone in to her with any problem, she knows exactly what it is, and perscribes me medicine that helps. I highly recommend Heather Butler if you're in the Pasadena area and are looking for a dermatologist!!!